/Engine/Source/Runtime/SlateCore/Public/Types/Attributes/SlateAttributeMember.inl
Assumes the reference is valid. Shorthand for the boilerplace code: MyAttribute.UpdateValueNow(); MyAttribute.Get();
UE_NODISCARD const [ObjectType](API\Runtime\SlateCore\Types\Attributes\TSlateMemberAttributeRef\ObjectType) & UpdateAndGet()